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v3.23.1

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Operating activities |  |
Net loss | $ (11,188) | $ (15,323)
Reconciliation of net loss to net cash used in operating activities: |  |
Stock-based compensation expense | 1,220 | 1,209
Net gain on warrants inherited in acquisition of Quellis |  | 1,542
Right-of-use asset - operating lease | 142 |
Other non-cash items | (26) | (79)
Changes in assets and liabilities: |  |
Prepaid expenses and other assets | (864) | 163
Lease liability - operating lease | (145) | (15)
Accounts payable | 140 | (627)
Accrued expenses | (2,532) | 571
Net cash used in operating activities | (13,253) | (12,559)
Investing activities |  |
Purchases of short-term investments | (95,923) | (81,702)
Sales and maturities of short-term investments | 290,920 | 54,603
Purchases of property and equipment | (5) |
Net cash provided by (used in) investing activities | 194,992 | (27,099)
Financing activities |  |
Proceeds from exercise of stock options | 37 |
Net cash provided by financing activities | 37 |
Net increase (decrease) in cash, cash equivalents and restricted cash | 181,776 | (39,658)
Cash, cash equivalents and restricted cash, beginning of period | 20,688 | 86,629
Cash, cash equivalents and restricted cash, end of period | 202,464 | $ 46,971
Supplemental disclosure of non-cash transactions: |  |
Conversion of Series X Preferred Stock into common stock | $ 1,074 |

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